.tooltip {
    position: relative;
    display: inline-block;
	float: left;
}

.tooltip .tooltiptext {
    visibility: hidden;
    width: 120px;
    background-color: black;
    color: #fff;
    text-align: center;
    border-radius: 6px;
    padding: 5px 0;
    
    /* 定位 */
    position: absolute;
    z-index: 1;
    top: 100%;
    left: 50%;
    margin-left: -60px;
}

.tooltip:hover .tooltiptext {
    visibility: visible;
}


.tooltipFile {
    position: relative;
}

.tooltipFile .tooltiptextFile {
    visibility: hidden;
    border: 1px orange solid;
    background-color: white;
}

.tooltipFile:hover .tooltiptextFile {
    visibility: visible;
}